I. The use of pillars or columns is very common in building and bridges. II. A pillar with rounded ends supports less load than that with a distributed shape at ends. III. Building has to take into account the conditions under the cost and long period, reliability of usable materials, etc. Which of the following statement(s) is/are correct?

Question

I. The use of pillars or columns is very common in building and bridges. II. A pillar with rounded ends supports less load than that with a distributed shape at ends. III. Building has to take into account the conditions under the cost and long period, reliability of usable materials, etc. Which of the following statement(s) is/are correct? (A) Only I (B) Both II and III (C) Only III (D) I, II and III

Tardigrade Admin · Accepted Answer

Use of pillars or columns is very common in buildings and bridges. A pillar with rounded ends as shown in Fig. (i) supports less load than that with a distributed shape at ends [Fig. (ii)].

The precise design of a bridge or a building has to take into account to the conditions under which it will function, the cost and long period, reliability of usable materials, etc.
So, all statements are correct.